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Teaching
  • ENTM 798D Topic Seminar in Pest Management (1 credit). Topic seminars in the area of pest management designed to explore current theoretical and applied issues.
  • ENTM725 IPM Practices (3 credits). On-line course introduces students to the fundamental elements of IPM programs including sampling and decision-making, and the integration of intervention tactics in comprehensive management strategies.

Graduate Program Affiliations
  • MEES – Marine, Estuarine, and Environmental Sciences

Extension and Research Interests
Prior to my retirement in July 2006, I had extension and research responsibilities, specializing in integrated pest management, non-target risk assessment, and pesticide resistance management. My extension work involved the development and implementation of IPM projects to reduce pesticide use in vegetable and field crops. I am still working part-time and involved with in-state and national training activities conducted to meet the continuing educational needs of agri-chemical personnel, crop advisors, county extension educators, and producers. I also provide periodic pest alerts and management recommendations tailored to real-time conditions, delivered via the Extension PestNet Report during the growing season.

Current Research
My current research projects focus on the comparative risk assessment of transgenic insecticidal crops and conventional insecticides on nontarget beneficial arthropods, including honey bee; efficacy evaluation of new transgenic corn events; testing of new insecticide formulations and active ingredients, with emphasis on organic products; and studies addressing information gaps in the biology and management of emerging pest species.

Recent Publications
  • Dively, Galen P., and Terrence Patton. 2022. An evaluation of cultural and chemical control practices to reduce slug damage in no-till corn" Insects 13, no. 3: 277. https://doi.org/10.3390/insects13030277
  • Dively, Galen, Margaret E Hartman, and Ronald Ochoa. 2022. Population Dynamics of Eriophyid Mites and Evaluation of Different Management Practices on Timothy Grass,  J. Econ. Entomol. toac004, https://doi.org/10.1093/jee/toac004
  • Reisig, Dominic D ., Chris DiFonzo, Galen Dively, Yasmine Farhan, Jeff Gore, and Jocelyn Smith. 2022.  Best Management Practices to Delay the Evolution of Bt Resistance in Lepidopteran Pests Without High Susceptibility to Bt Toxins in North America, J. of Econ. Entomol. 115: 10–25, https://doi.org/10.1093/jee/toab247
  •  Dively G. P., T P Kuhar, S Taylor, H B Doughty, K Holmstrom, et al. 2021. Sweet Corn Sentinel Monitoring for Lepidopteran Field-Evolved Resistance to Bt Toxins,  J. of Econ. Entomol. 114: 307–319, https://doi.org/10.1093/jee/toaa264
  • Blanco, Carlos A., Miguel Corona, Gerardo Hernández, Allan H. Smith-Pardo, and Galen P. Dively. 2020. Metal screen at the entrance of a hive does not affect production and reproduction of honey bees and can prevent predation by hornets. Southwestern Entomol.  45: 843-852.
  • Hunt L.G., G.P. Dively, and C. R.R. Hooks. 2020. Flowering Chamaecrista fasciculata borders enhance natural enemy populations and improve grain quality in field corn. Agric. Ecosystems & Environ. 306, 2021, 107193. ISSN 0167-8809, https://doi.org/10.1016/j.agee.2020.107193.
  • Dively, G.P.,  Patton, L. Barranco, and K. Kulhanek. 2020. Comparative Efficacy of Common Active Ingredients in Organic Insecticides Against Difficult to Control Insect Pests. Insects 11: 614. doi.org/10.3390/insects11090614
  • Dively, G.P., A.W. Leslie and Cerruti R.R. Hooks. 2020. Evaluating wildflowers for use in conservation grass buffers to augment natural enemies in neighboring cornfields. Ecolog. Engineering. 144: 105703. doi.org/10.1016/j.ecoleng.2019.105703.
  • Dively, G.P., M.S. Crossley, S.D. Schoville, N. Steinhauer, and D.J. Hawthrone. 2020. Regional differences in gene regulation may underlie patterns of sensitivity to novel insecticides in Colorado potato beetle. Pest Manag. Sci. 76: 4278-4285. DOI: 10.1101/794446.
  • Walter, J., L. Sheppard, D. Venugopal, D.C. Reuman, G.P. Dively, J.F. Tooker and D.M. Johnson. 2019. Weather and regional crop composition variation drive spatial synchrony of lepidopteran agricultural pests. Ecol. Entomol. 45:372-760. DOI: 10.1111/een.12830
  • Dubey, A., M. Lewis, G.P. Dively, and K.A. Hamby. 2020. Ecological impacts of pesticide seed treatments on arthropod communities in a grain crop rotation. Appl. Ecology 57:936-951. doi.org/10.1111/1365-2664.13595
  • Dively, G.P., F. Huang, I. Oyediran, T. Burd, S. Morsello. 2019. Evaluation of gene flow in structured and seed blend refuge systems of nonBt and Bt corn. J. of Pest Sc. doi.org/10.1007/s10340-019-01126-4.
  • Moore, L.C., A.. Leslie, C.R.R. Hooks, and G.P. Dively. 2018. Can plantings of partridge pea (Chamaecrista fasciculata) enhance beneficial arthropod communities in neighboring soybeans? Biol. Control 128:6-16. https://doi.org/10.1016/j.biocontrol.2018.09.008
  • Disquea, H.H., K.A. Hamby, A. Dubey, C. Taylor, and G.P. Dively. 2018. Effects of clothianidin-treated seed on the arthropod community in a mid-Atlantic no-till corn agroecosystem. Pest Management Sci. (accepted manuscript online) https://doi.org/10.1002/ps.5201
  • Dively, G.P, Venugopal, D., Bean, D., Whalen, J., Holmstrom, K., Kuhar, T., Doughty, H., Patton, T., Cissel, B., Hutchison, B., 2018.  Regional pest suppression associated with widespread Bt maize adoption benefits vegetable growers. PNAS 115 (13) 3320-3325; www.pnas.org/cgi/doi/10.1073/pnas.1720692115
  • Nelson, J.L, Hunt, L.G., Lewis, M.T., Hamby, K.A., Hooks, C.R.R., and G.P. Dively. 2018. Arthropod communities in warm and cool grass riparian buffers and their influence on natural enemies in adjacent crops. Agric. Ecosystems & Environ. 257: 81-91.
  • Venugopal P.D., Dively G.P. 2017. Climate change, transgenic corn adoption and field-evolved resistance in corn earworm. R.Soc.opensci. 4:170210. http://dx.doi.org/10.1098/rsos.170210
  • Taylor C.M., Cofey P.L., Hamby K.A., Dively G.P. 2017. Laboratory rearing of Halyomorpha halys: methods to optimize survival and fitness of adults during and after diapause. J Pest Sci. DOI: 10.1007/s10340-017-0881-9.
  • Mathews, C.R, B. Blaauw, G.P. Dively, J. Kotcon, J. Moore, E. Ogburn, et al. 2017, Evaluating a polyculture trap crop for organic management of Halyomorpha halys and native stink bugs in peppers. J Pest Sci DOI 10.1007/s10340-017-0838-z
  • Taylor, C, Johnson V. Dively GP. 2016. Assessing the use of antimicrobials to sterilize brown marmorated stink bug egg masses and prevent symbiont acquisition. J Pest Sci. 2016 DOI: 10.1007/s10340-016-0814-z.
  • Dively GP, Venugopal D, Finkenbinder. 2016. Field-evolved resistance in corn earworm to Cry Proteins expressed by transgenic sweet corn. PLoS ONE 11(12): e0169115. doi:10.1371/journal.pone.0169115.
  • Philips, C.R., T.P. Kuhar, G.P. Dively, G. Hamilton, J. Whalen, and K. Kamminga. 2016. Seasonal abundance and phenology of Halyomorpha halys (Hemiptera: Pentatomidae) on different pepper cultivars in the Mid-Atlantic (United States). J. Econ. Entomol. 2016, 1–9 doi: 10.1093/jee/tow256.
  • Venugopal PD, Dively GP, Herbert A, Malone S, Whalen J, Lamp WO. 2016. Contrasting
  • role of temperature in structuring regional patterns of invasive and native pestilential stink bugs. PLoS ONE 11(2): e0150649. doi:10.1371/journal.pone.0150649
  • Aigner BL, Herbert DA, Dively GP, Venugopal D, Whalen J, Cissel B, et al. 2016. Comparison of two sampling methods for assessing Halyomorpha halys (Hemiptera: Pentatomidae) numbers in soybean fields. J Econ Entomol. 2016 Oct 15.
  • Nielsen, AL, G Dively, JM Pote, G Zinati, C Mathews. 2016. Identifying a Potential Trap Crop for a Novel Insect Pest, Halyomorpha halys (Hemiptera: Pentatomidae) in Organic Farms. Env. Entomol. 45: 472-478.
  • Guseman AJ, Miller K, Kunkle G, Dively GP, Pettis JS, Evans JD, et al. 2016. Multi-drug resistance transporters and a mechanism-based strategy for assessing risks of pesticide combinations to honey bees. PLoS ONE 11(2): e0148242. doi:10.1371/journal.pone.0148242
  • Nottingham, L., G.P. Dively, A. Herbert, P. Schultz, and T. Kuhar. 2015. Natural History, Ecology and Management of the Mexican bean beetle (Coleoptera: Coccinellidae) in the U.S." Jour. of Integrated Pest Management 7(1): 2; 1–12 doi: 10.1093/jipm/pmv023
  • Zobel, E.S. C.R.R. Hooks, and G.P. Dively. 2015. Seasonal abundance, host preference, and feeding injury of the brown marmorated stink bug (Hemiptera: Pentatomidae) on selected vegetables. Jour. of Econ. Entomol.tow055; DOI: 10.1093/jee/tow055
  • Oyediran, I., G.P. Dively, F. Huang, and T. Burd. 2015.  Evaluation of European corn borer Ostrinia nubilalis (Lepidoptera: Crambidae) larval movement and survival in structured and seed blend refuge plantings. Crop Protection. Crop Protection 81:145-153.
  • Chen G., C.R.R. Hooks, T.W. Patton, R. and G.P. Dively. 2015. Tolerance to stalk and ear-invading worms and yield performance of Bt and conventional corn hybrids. Agronomy Jour. doi:10.2134/agronj15.0139
  • Leskey, T.C., A. Agnello, J. C. Bergh, G.P. Dively, G. C. Hamilton et al. 2015. Attraction of the invasive Halyomorpha halys (Hemiptera: Pentatomidae) to traps baited with semiochemical stimuli across the United States. Environ. Entomol. 44(3):746-56.
  • Venugopal, P.D, G.P. Dively, and W.O. Lamp. 2015. Spatiotemporal Dynamics of the Invasive Halyomorpha halys (Hemiptera: Pentatomidae) in and Between Adjacent Corn and Soybean Fields. J. Econ. Entomol.   DOI:10.1093/jee/tov188
  • Venugopal PD, Coffey PL, Dively GP, Lamp WO. 2014. Adjacent Habitat Influence on Stink Bug (Hemiptera: Pentatomidae) Densities and the Associated Damage at Field Corn and Soybean Edges. PLoS ONE 9(10): e109917. doi:10.1371/journal.pone.0109917.
  • Neher, D.A., A.W.N. Muthumbi, and G.P. Dively. 2014. Impact of coleopteran-active Bt corn on non-target nematode communities in soil and decomposing corn roots. Soil Biology and Biochem. 76:127-135; doi:10.1016/j.soilbio.2014.05.019.
  • Dively G.P., M.S. Embrey, A. Kamel, D.J. Hawthorne, and J.S. Pettis, 2014. Assessment of Chronic Sublethal Effects of Imidacloprid on Honey Bee Colony Health. PLoS ONE 10(4): e0126043. doi: 10.1371/journal.pone.0126043
  • Rice, K., C. Bergh, E. Bergman, D. Biddinger, C. Dieckhoff , G.P. Dively, et al. 2014. Biology, ecology, and management of brown marmorated stink bug (Halyomorpha halys). J. Integ. Pest Mngmt. 5(3): 2014; DOI: http://dx.doi.org/10.1603/IPM14002.
  • Alyokhin, A., D. Mota-Sanchez , M. Baker, W. E. Snyder, S. Menasha, M. Whalon, and G. P. Dively. 2014. Red Queen on a potato field: IPM vs. chemical dependency in Colorado potato beetle control. Pest Manag. Sci. DOI:10.1002/ps.3826.
  • Taylor, C.M, P.L. Coffey and G.P. Dively. 2014. The importance of gut symbionts in the development of the brown marmorated stink bug, Halyomorpha halys (Stål). PLOS One 9(3): e90312. doi:10.1371/journal.pone.0090312.
  • Human, H., R. Brotschneider, V. Dietemann, G.P. Dively, J.D. Ellis et al. 2013. Miscellaneous standard methods for Apis mellifera research. Jour. of Apicultural Res. 52(4). DOI:10.3896/IBRA.1.52.4.10.
  • Shelton, A.M., D.L. Olmstead, E. C. Burkness, W. D. Hutchison, G. Dively, C. Welty, and A. N. Sparks. 2013. J. Econ. Entomol. 106(5): 2151Ð2159 (2013); DOI: http://dx.doi.org/10.1603/EC13146.
  • Owens D.R., D.A., Herbert Jr, G.P. Dively, D.D. Reisig and T.P. Kuhar. 2013.Does feeding by Halyomorpha halys (Hemiptera: Pentatomidae) reduce soybean seed quality and yield? J. Econ. Entomol. 106:1317-23.
  • Pettis, J.S., D. vanEngelsdorp, J. Johnson and G.P. Dively. 2012. Pesticide exposure in honey bees results in increased levels of the gut pathogen Nosema. Naturwissenschaften DOI 10.1007/s00114-011-0881-1
  • Blank, P.J., J.R. Parks, and G.P. Dively. 2011. Wintering bird response to fall mowing of herbaceous buffers. The Wilson Journal of Ornithology. The Wilson Journal of Ornithology 123(1):59–64 (pdf).
  • Blank, P.J., G.P. Dively, D. Gill and C. Rewa. 2011. Bird community response to filter strips in Maryland. Journal of Wildlife Management. Journal of Wildlife Management 75(1):116–125 (pdf).
  • Burkness E. C., G.P. Dively, T. Patton, A.C. Morey, and W.D. Hutchison. 2010. Novel Vip3A Bacillus thuringiensis (Bt) maize approaches high-dose efficacy against Helicoverpa zea (Lepidoptera: Noctuidae) under field conditions Implications for resistance management. GM Crops 1:5, 1-7.(pdf file)
  • Burkness E. C., G.P. Dively, T. Patton, A.C. Morey, and W.D. Hutchison. 2010. Novel Vip3A Bacillus thuringiensis (Bt) maize approaches high-dose efficacy against Helicoverpa zea (Lepidoptera: Noctuidae) under field conditions Implications for resistance management. GM Crops 1:5, 1-7.(pdf file)
  • Jensen, P.D., G.P. Dively, C.M. Swan, and W.O. Lamp. 2009. Exposure and non-target effects of transgenic Bt corn debris in streams. Environ. Entomol. (pdf file).
  • Swan, C.M., P.D. Jensen, G.P. Dively, and W.O. Lamp. 2009. Processing of transgenic crop residues in stream ecosystems. Jour. Appl. Ecology 46: 1304-1313. (pdf file).
  • Lawhorn, C.N., D.A. Neher, and G.P. Dively. 2009. Impact of coleopteran targeting toxin (Cry3Bb1) of Bt corn on microbially mediated decomposition. Appl. Soil Ecology (pdf file). 
  • Chapman, A.V., T.P. Kuhar, P.B. Schultz, T.W. Leslie, S.J. Fleischer, G.P. Dively, and J. Whalen. 2009. Integrating chemical and biological control of European corn borer in bell pepper. J. Econ. Entomol. 102(1): (in press). 
  • Storer, N.P., G.P. Dively, and R. Herman. 2008. Landscape effects of insect resistant GM crops. (Chapter 13, pp 273-302). In J. Romeis, A. M. Shelton, and G. G. Kennedy (eds.), Integration of Insect-resistant GM crops within IPM Programs, Springer, New York, NY. (pdf file)
  • Kaplan I., Dively G.P., and Denno R.F. 2008. The costs of anti-herbivore defense traits in agricultural crop plants: a case study involving leafhoppers and potato trichomes. Ecological Applications (in press). 
  • Alyokhin, A., M. Baker, D. Mota-Sanchez, G. Dively, and E. Grafius. 2008. Colorado potato beetle resistance to insecticides. Amer. J. of Potato Res. American Journal of Potato Research 85: 395–413.
  • Prasifka, J. R., R. L. Hellmich, G. P. Dively, L.S. Higgins, P.M. Dixon, and J.J. Duan. 2008. Selection of nontarget arthropod taxa for field research on transgenic insecticidal crops: using empirical data and statistical power. Environ. Entomol. 37(1): 1-10.
  • Kaplan I., Dively G.P, Denno R.F. 2008. Variation in tolerance and resistance to the leafhopper Empoasca fabae (Hemiptera: Cicadellidae) among potato cultivars: implications for action thresholds. J. Econ. Entomol. 101:959-968.
  • Rose, R.I. and G. P. Dively. 2008. Effects of insecticide-treated and lepidopteran-active Bt transgenic sweet corn on the abundance and diversity of arthropods. Environ. Entomol. 36(5): 1254- 268.
  • Fleischer, S., Payne, G., Kuhar, T., Herbert, A., Jr., Malone, S., Whalen, J., Dively, G., Johnson, D., Hebberger, J. A., Ingerson-Mahar, J., Miller, D., and Isard, S. 2007. Helicoverpa zea trends from the Northeast: Suggestions towards collaborative mapping of migration and pyrethroid susceptibility. Online. Plant Health Progress doi:10.1094/PHP-2007-0719-03-RV.
  • Duan J.J., Marvier M., Huesing J., Dively G.P., Huang Z.Y. 2008. A meta-analysis of effects of Bt crops on honey bees (Hymenoptera: Apidae). PLoS ONE 3(1): e1415. doi:10.1371/journal.pone.0001415.
  • Kaplan I., Lynch M.E., Dively G.P., Denno R.F. 2007. Leafhopper-induced plant resistance enhances predation risk in a phytophagous beetle. Oecologia, 152: 665-675.
  • Prasifka, J. R., M. D. Lopez, R. L. Hellmich, L. C. Lewis, and G. P. Dively. 2007. Comparison of pitfall traps and litter bags for sampling ground-dwelling arthropods J. Appl. Entomol. 131(2): 115-120. (pdf file)
  • Alyokhin, A., G.P. Dively, M. Patterson, D. Rogers, M. Mahoney, and J. Wollam. 2007. Susceptibility of Imidacloprid-Resistant Colorado Potato Beetles to Non-neonicotinoid Insecticides in the Laboratory and Field Trials. American Journal of Potato Research Amer J of Potato Res (2006) 83:485-49. (pdf file)
  • Alyokhin, A., G.P. Dively, M. Patterson, C. Castaldo, D. Rogers, M. Mahoney, and J. Wollam. 2007. Cross-resistance to imidacloprid and thiamethoxam in the Colorado potato beetle. Pest Management Science 63: 32-41.
  • Rose, R.I., G. P. Dively, and J. Pettis. 2007. Effects of Bt corn pollen on honey bees: emphasis on protocol development. Apidologie 38: 368-377 
  • Lynch, M.E., I. Kaplan, G.P. Dively, and R.F. Denno. 2006. Host plant-mediated competition via induced resistance: interactions between pest herbivores on potatoes. Ecological Applications 16: 855-864.
  • G. P. Dively. 2005. Impact of transgenic VIP3a x Cry1ab lepidopteran-resistant field corn on the nontarget arthropod community. Environ. Entomol. 34: 1267-1291. (pdf file)
  • Prasifka, J. R., R.L. Hellmich, G. P. Dively, and L. C. Lewis. 2005. Assessing the effects of pest management on nontarget arthropods: the influence of plot size and isolation. Environ. Entomol. 34: 1181-1192. (pdf file)
  • Dively, G.P., R. Rose, M.K. Sears, R.L. Hellmich, D.E. Stanley-Horn, D. D. Calvin, J.M. Russo, and P.L. Anderson. 2004. Effects on monarch butterfly larvae (Lepidoptera: Danaidae) after continuous exposure to Cry1ab-expressing corn during anthesis. Environ. Entomol. 33: 1116- 1125.  Abstract
  • Head, G. and G.P. Dively. 2004. Impact of transgenic Bt crops on non-target animal species. In Opender Koul and G. S. Dhaliwal (eds.), Transgenic Crop Protection: Concepts and Strategies, Science Publishers Inc., New Hampshire, USA. 388 pp.
  • Olson, E. R., G. P. Dively, and J. O. Nelson, 2004, Bioassay determination of the distribution of imidacloprid in potato plants: implications to resistance development. J. Econ. Entomol. 97: 614-620  Abstract

Awards
  • 2010 L.O. Howard Distinguished Achievement Award, Eastern Branch of the Entomological Society of America
  • 2003 Life Sciences Faculty Service Award, University of Maryland, College of Chemical and Life Sciences
  • 2001 ESA Recognition Award in Entomology, Eastern Branch of the Entomological Society of America.
  • Recognized as Top 25 Most Influential People in Agriculture for 1998, Farmers Digest Magazine, November. 1998.
  • 1993 Distinguished Achievement Award in Extension, Eastern Branch of the Entomological Society of America.
  • 1992 Faculty Award of Excellence in Extension, University of Maryland, Colleges of Agriculture and Life Sciences.

Education
  • B.S. Juniata College, Huntingdon, PA, June 1966; Major: Biology
  • M.S. Rutgers University, New Brunswick, NJ, June 1968; Major: Entomology
  • Ph.D. Rutgers University, New Brunswick, NJ, June 1974; Major: Entomology